|  | /* | 
|  | * Copyright (C) 2013 The Android Open Source Project | 
|  | * | 
|  | * Licensed under the Apache License, Version 2.0 (the "License"); | 
|  | * you may not use this file except in compliance with the License. | 
|  | * You may obtain a copy of the License at | 
|  | * | 
|  | *      http://www.apache.org/licenses/LICENSE-2.0 | 
|  | * | 
|  | * Unless required by applicable law or agreed to in writing, software | 
|  | * distributed under the License is distributed on an "AS IS" BASIS, | 
|  | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | 
|  | * See the License for the specific language governing permissions and | 
|  | * limitations under the License. | 
|  | */ | 
|  |  | 
|  | package android.telecom; | 
|  |  | 
|  | import android.annotation.SdkConstant; | 
|  | import android.annotation.SystemApi; | 
|  | import android.app.Service; | 
|  | import android.content.Intent; | 
|  | import android.hardware.camera2.CameraManager; | 
|  | import android.net.Uri; | 
|  | import android.os.Bundle; | 
|  | import android.os.Handler; | 
|  | import android.os.IBinder; | 
|  | import android.os.Looper; | 
|  | import android.os.Message; | 
|  | import android.view.Surface; | 
|  |  | 
|  | import com.android.internal.os.SomeArgs; | 
|  | import com.android.internal.telecom.IInCallAdapter; | 
|  | import com.android.internal.telecom.IInCallService; | 
|  |  | 
|  | import java.lang.String; | 
|  | import java.util.Collections; | 
|  | import java.util.List; | 
|  |  | 
|  | /** | 
|  | * This service is implemented by any app that wishes to provide the user-interface for managing | 
|  | * phone calls. Telecom binds to this service while there exists a live (active or incoming) call, | 
|  | * and uses it to notify the in-call app of any live and recently disconnected calls. An app must | 
|  | * first be set as the default phone app (See {@link TelecomManager#getDefaultDialerPackage()}) | 
|  | * before the telecom service will bind to its {@code InCallService} implementation. | 
|  | * <p> | 
|  | * Below is an example manifest registration for an {@code InCallService}. The meta-data | 
|  | * ({@link TelecomManager#METADATA_IN_CALL_SERVICE_UI}) indicates that this particular | 
|  | * {@code InCallService} implementation intends to replace the built-in in-call UI. | 
|  | * <pre> | 
|  | * {@code | 
|  | * <service android:name="your.package.YourInCallServiceImplementation" | 
|  | *          android:permission="android.permission.BIND_INCALL_SERVICE"> | 
|  | *      <meta-data android:name="android.telecom.IN_CALL_SERVICE_UI" android:value="true" /> | 
|  | *      <intent-filter> | 
|  | *          <action android:name="android.telecom.InCallService"/> | 
|  | *      </intent-filter> | 
|  | * </service> | 
|  | * } | 
|  | * </pre> | 
|  | */ | 
|  | public abstract class InCallService extends Service { | 
|  |  | 
|  | /** | 
|  | * The {@link Intent} that must be declared as handled by the service. | 
|  | */ | 
|  | @SdkConstant(SdkConstant.SdkConstantType.SERVICE_ACTION) | 
|  | public static final String SERVICE_INTERFACE = "android.telecom.InCallService"; | 
|  |  | 
|  | private static final int MSG_SET_IN_CALL_ADAPTER = 1; | 
|  | private static final int MSG_ADD_CALL = 2; | 
|  | private static final int MSG_UPDATE_CALL = 3; | 
|  | private static final int MSG_SET_POST_DIAL_WAIT = 4; | 
|  | private static final int MSG_ON_CALL_AUDIO_STATE_CHANGED = 5; | 
|  | private static final int MSG_BRING_TO_FOREGROUND = 6; | 
|  | private static final int MSG_ON_CAN_ADD_CALL_CHANGED = 7; | 
|  | private static final int MSG_SILENCE_RINGER = 8; | 
|  | private static final int MSG_ON_CONNECTION_EVENT = 9; | 
|  |  | 
|  | /** Default Handler used to consolidate binder method calls onto a single thread. */ | 
|  | private final Handler mHandler = new Handler(Looper.getMainLooper()) { | 
|  | @Override | 
|  | public void handleMessage(Message msg) { | 
|  | if (mPhone == null && msg.what != MSG_SET_IN_CALL_ADAPTER) { | 
|  | return; | 
|  | } | 
|  |  | 
|  | switch (msg.what) { | 
|  | case MSG_SET_IN_CALL_ADAPTER: | 
|  | mPhone = new Phone(new InCallAdapter((IInCallAdapter) msg.obj)); | 
|  | mPhone.addListener(mPhoneListener); | 
|  | onPhoneCreated(mPhone); | 
|  | break; | 
|  | case MSG_ADD_CALL: | 
|  | mPhone.internalAddCall((ParcelableCall) msg.obj); | 
|  | break; | 
|  | case MSG_UPDATE_CALL: | 
|  | mPhone.internalUpdateCall((ParcelableCall) msg.obj); | 
|  | break; | 
|  | case MSG_SET_POST_DIAL_WAIT: { | 
|  | SomeArgs args = (SomeArgs) msg.obj; | 
|  | try { | 
|  | String callId = (String) args.arg1; | 
|  | String remaining = (String) args.arg2; | 
|  | mPhone.internalSetPostDialWait(callId, remaining); | 
|  | } finally { | 
|  | args.recycle(); | 
|  | } | 
|  | break; | 
|  | } | 
|  | case MSG_ON_CALL_AUDIO_STATE_CHANGED: | 
|  | mPhone.internalCallAudioStateChanged((CallAudioState) msg.obj); | 
|  | break; | 
|  | case MSG_BRING_TO_FOREGROUND: | 
|  | mPhone.internalBringToForeground(msg.arg1 == 1); | 
|  | break; | 
|  | case MSG_ON_CAN_ADD_CALL_CHANGED: | 
|  | mPhone.internalSetCanAddCall(msg.arg1 == 1); | 
|  | break; | 
|  | case MSG_SILENCE_RINGER: | 
|  | mPhone.internalSilenceRinger(); | 
|  | break; | 
|  | case MSG_ON_CONNECTION_EVENT: { | 
|  | SomeArgs args = (SomeArgs) msg.obj; | 
|  | try { | 
|  | String callId = (String) args.arg1; | 
|  | String event = (String) args.arg2; | 
|  | Bundle extras = (Bundle) args.arg3; | 
|  | mPhone.internalOnConnectionEvent(callId, event, extras); | 
|  | } finally { | 
|  | args.recycle(); | 
|  | } | 
|  | break; | 
|  | } | 
|  | default: | 
|  | break; | 
|  | } | 
|  | } | 
|  | }; | 
|  |  | 
|  | /** Manages the binder calls so that the implementor does not need to deal with it. */ | 
|  | private final class InCallServiceBinder extends IInCallService.Stub { | 
|  | @Override | 
|  | public void setInCallAdapter(IInCallAdapter inCallAdapter) { | 
|  | mHandler.obtainMessage(MSG_SET_IN_CALL_ADAPTER, inCallAdapter).sendToTarget(); | 
|  | } | 
|  |  | 
|  | @Override | 
|  | public void addCall(ParcelableCall call) { | 
|  | mHandler.obtainMessage(MSG_ADD_CALL, call).sendToTarget(); | 
|  | } | 
|  |  | 
|  | @Override | 
|  | public void updateCall(ParcelableCall call) { | 
|  | mHandler.obtainMessage(MSG_UPDATE_CALL, call).sendToTarget(); | 
|  | } | 
|  |  | 
|  | @Override | 
|  | public void setPostDial(String callId, String remaining) { | 
|  | // TODO: Unused | 
|  | } | 
|  |  | 
|  | @Override | 
|  | public void setPostDialWait(String callId, String remaining) { | 
|  | SomeArgs args = SomeArgs.obtain(); | 
|  | args.arg1 = callId; | 
|  | args.arg2 = remaining; | 
|  | mHandler.obtainMessage(MSG_SET_POST_DIAL_WAIT, args).sendToTarget(); | 
|  | } | 
|  |  | 
|  | @Override | 
|  | public void onCallAudioStateChanged(CallAudioState callAudioState) { | 
|  | mHandler.obtainMessage(MSG_ON_CALL_AUDIO_STATE_CHANGED, callAudioState).sendToTarget(); | 
|  | } | 
|  |  | 
|  | @Override | 
|  | public void bringToForeground(boolean showDialpad) { | 
|  | mHandler.obtainMessage(MSG_BRING_TO_FOREGROUND, showDialpad ? 1 : 0, 0).sendToTarget(); | 
|  | } | 
|  |  | 
|  | @Override | 
|  | public void onCanAddCallChanged(boolean canAddCall) { | 
|  | mHandler.obtainMessage(MSG_ON_CAN_ADD_CALL_CHANGED, canAddCall ? 1 : 0, 0) | 
|  | .sendToTarget(); | 
|  | } | 
|  |  | 
|  | @Override | 
|  | public void silenceRinger() { | 
|  | mHandler.obtainMessage(MSG_SILENCE_RINGER).sendToTarget(); | 
|  | } | 
|  |  | 
|  | @Override | 
|  | public void onConnectionEvent(String callId, String event, Bundle extras) { | 
|  | SomeArgs args = SomeArgs.obtain(); | 
|  | args.arg1 = callId; | 
|  | args.arg2 = event; | 
|  | args.arg3 = extras; | 
|  | mHandler.obtainMessage(MSG_ON_CONNECTION_EVENT, args).sendToTarget(); | 
|  | } | 
|  | } | 
|  |  | 
|  | private Phone.Listener mPhoneListener = new Phone.Listener() { | 
|  | /** ${inheritDoc} */ | 
|  | @Override | 
|  | public void onAudioStateChanged(Phone phone, AudioState audioState) { | 
|  | InCallService.this.onAudioStateChanged(audioState); | 
|  | } | 
|  |  | 
|  | public void onCallAudioStateChanged(Phone phone, CallAudioState callAudioState) { | 
|  | InCallService.this.onCallAudioStateChanged(callAudioState); | 
|  | }; | 
|  |  | 
|  | /** ${inheritDoc} */ | 
|  | @Override | 
|  | public void onBringToForeground(Phone phone, boolean showDialpad) { | 
|  | InCallService.this.onBringToForeground(showDialpad); | 
|  | } | 
|  |  | 
|  | /** ${inheritDoc} */ | 
|  | @Override | 
|  | public void onCallAdded(Phone phone, Call call) { | 
|  | InCallService.this.onCallAdded(call); | 
|  | } | 
|  |  | 
|  | /** ${inheritDoc} */ | 
|  | @Override | 
|  | public void onCallRemoved(Phone phone, Call call) { | 
|  | InCallService.this.onCallRemoved(call); | 
|  | } | 
|  |  | 
|  | /** ${inheritDoc} */ | 
|  | @Override | 
|  | public void onCanAddCallChanged(Phone phone, boolean canAddCall) { | 
|  | InCallService.this.onCanAddCallChanged(canAddCall); | 
|  | } | 
|  |  | 
|  | /** ${inheritDoc} */ | 
|  | @Override | 
|  | public void onSilenceRinger(Phone phone) { | 
|  | InCallService.this.onSilenceRinger(); | 
|  | } | 
|  |  | 
|  | }; | 
|  |  | 
|  | private Phone mPhone; | 
|  |  | 
|  | public InCallService() { | 
|  | } | 
|  |  | 
|  | @Override | 
|  | public IBinder onBind(Intent intent) { | 
|  | return new InCallServiceBinder(); | 
|  | } | 
|  |  | 
|  | @Override | 
|  | public boolean onUnbind(Intent intent) { | 
|  | if (mPhone != null) { | 
|  | Phone oldPhone = mPhone; | 
|  | mPhone = null; | 
|  |  | 
|  | oldPhone.destroy(); | 
|  | // destroy sets all the calls to disconnected if any live ones still exist. Therefore, | 
|  | // it is important to remove the Listener *after* the call to destroy so that | 
|  | // InCallService.on* callbacks are appropriately called. | 
|  | oldPhone.removeListener(mPhoneListener); | 
|  |  | 
|  | onPhoneDestroyed(oldPhone); | 
|  | } | 
|  |  | 
|  | return false; | 
|  | } | 
|  |  | 
|  | /** | 
|  | * Obtain the {@code Phone} associated with this {@code InCallService}. | 
|  | * | 
|  | * @return The {@code Phone} object associated with this {@code InCallService}, or {@code null} | 
|  | *         if the {@code InCallService} is not in a state where it has an associated | 
|  | *         {@code Phone}. | 
|  | * @hide | 
|  | * @deprecated Use direct methods on InCallService instead of {@link Phone}. | 
|  | */ | 
|  | @SystemApi | 
|  | @Deprecated | 
|  | public Phone getPhone() { | 
|  | return mPhone; | 
|  | } | 
|  |  | 
|  | /** | 
|  | * Obtains the current list of {@code Call}s to be displayed by this in-call service. | 
|  | * | 
|  | * @return A list of the relevant {@code Call}s. | 
|  | */ | 
|  | public final List<Call> getCalls() { | 
|  | return mPhone == null ? Collections.<Call>emptyList() : mPhone.getCalls(); | 
|  | } | 
|  |  | 
|  | /** | 
|  | * Returns if the device can support additional calls. | 
|  | * | 
|  | * @return Whether the phone supports adding more calls. | 
|  | */ | 
|  | public final boolean canAddCall() { | 
|  | return mPhone == null ? false : mPhone.canAddCall(); | 
|  | } | 
|  |  | 
|  | /** | 
|  | * Obtains the current phone call audio state. | 
|  | * | 
|  | * @return An object encapsulating the audio state. Returns null if the service is not | 
|  | *         fully initialized. | 
|  | * @deprecated Use {@link #getCallAudioState()} instead. | 
|  | * @hide | 
|  | */ | 
|  | @Deprecated | 
|  | public final AudioState getAudioState() { | 
|  | return mPhone == null ? null : mPhone.getAudioState(); | 
|  | } | 
|  |  | 
|  | /** | 
|  | * Obtains the current phone call audio state. | 
|  | * | 
|  | * @return An object encapsulating the audio state. Returns null if the service is not | 
|  | *         fully initialized. | 
|  | */ | 
|  | public final CallAudioState getCallAudioState() { | 
|  | return mPhone == null ? null : mPhone.getCallAudioState(); | 
|  | } | 
|  |  | 
|  | /** | 
|  | * Sets the microphone mute state. When this request is honored, there will be change to | 
|  | * the {@link #getCallAudioState()}. | 
|  | * | 
|  | * @param state {@code true} if the microphone should be muted; {@code false} otherwise. | 
|  | */ | 
|  | public final void setMuted(boolean state) { | 
|  | if (mPhone != null) { | 
|  | mPhone.setMuted(state); | 
|  | } | 
|  | } | 
|  |  | 
|  | /** | 
|  | * Sets the audio route (speaker, bluetooth, etc...).  When this request is honored, there will | 
|  | * be change to the {@link #getCallAudioState()}. | 
|  | * | 
|  | * @param route The audio route to use. | 
|  | */ | 
|  | public final void setAudioRoute(int route) { | 
|  | if (mPhone != null) { | 
|  | mPhone.setAudioRoute(route); | 
|  | } | 
|  | } | 
|  |  | 
|  | /** | 
|  | * Invoked when the {@code Phone} has been created. This is a signal to the in-call experience | 
|  | * to start displaying in-call information to the user. Each instance of {@code InCallService} | 
|  | * will have only one {@code Phone}, and this method will be called exactly once in the lifetime | 
|  | * of the {@code InCallService}. | 
|  | * | 
|  | * @param phone The {@code Phone} object associated with this {@code InCallService}. | 
|  | * @hide | 
|  | * @deprecated Use direct methods on InCallService instead of {@link Phone}. | 
|  | */ | 
|  | @SystemApi | 
|  | @Deprecated | 
|  | public void onPhoneCreated(Phone phone) { | 
|  | } | 
|  |  | 
|  | /** | 
|  | * Invoked when a {@code Phone} has been destroyed. This is a signal to the in-call experience | 
|  | * to stop displaying in-call information to the user. This method will be called exactly once | 
|  | * in the lifetime of the {@code InCallService}, and it will always be called after a previous | 
|  | * call to {@link #onPhoneCreated(Phone)}. | 
|  | * | 
|  | * @param phone The {@code Phone} object associated with this {@code InCallService}. | 
|  | * @hide | 
|  | * @deprecated Use direct methods on InCallService instead of {@link Phone}. | 
|  | */ | 
|  | @SystemApi | 
|  | @Deprecated | 
|  | public void onPhoneDestroyed(Phone phone) { | 
|  | } | 
|  |  | 
|  | /** | 
|  | * Called when the audio state changes. | 
|  | * | 
|  | * @param audioState The new {@link AudioState}. | 
|  | * @deprecated Use {@link #onCallAudioStateChanged(CallAudioState) instead}. | 
|  | * @hide | 
|  | */ | 
|  | @Deprecated | 
|  | public void onAudioStateChanged(AudioState audioState) { | 
|  | } | 
|  |  | 
|  | /** | 
|  | * Called when the audio state changes. | 
|  | * | 
|  | * @param audioState The new {@link CallAudioState}. | 
|  | */ | 
|  | public void onCallAudioStateChanged(CallAudioState audioState) { | 
|  | } | 
|  |  | 
|  | /** | 
|  | * Called to bring the in-call screen to the foreground. The in-call experience should | 
|  | * respond immediately by coming to the foreground to inform the user of the state of | 
|  | * ongoing {@code Call}s. | 
|  | * | 
|  | * @param showDialpad If true, put up the dialpad when the screen is shown. | 
|  | */ | 
|  | public void onBringToForeground(boolean showDialpad) { | 
|  | } | 
|  |  | 
|  | /** | 
|  | * Called when a {@code Call} has been added to this in-call session. The in-call user | 
|  | * experience should add necessary state listeners to the specified {@code Call} and | 
|  | * immediately start to show the user information about the existence | 
|  | * and nature of this {@code Call}. Subsequent invocations of {@link #getCalls()} will | 
|  | * include this {@code Call}. | 
|  | * | 
|  | * @param call A newly added {@code Call}. | 
|  | */ | 
|  | public void onCallAdded(Call call) { | 
|  | } | 
|  |  | 
|  | /** | 
|  | * Called when a {@code Call} has been removed from this in-call session. The in-call user | 
|  | * experience should remove any state listeners from the specified {@code Call} and | 
|  | * immediately stop displaying any information about this {@code Call}. | 
|  | * Subsequent invocations of {@link #getCalls()} will no longer include this {@code Call}. | 
|  | * | 
|  | * @param call A newly removed {@code Call}. | 
|  | */ | 
|  | public void onCallRemoved(Call call) { | 
|  | } | 
|  |  | 
|  | /** | 
|  | * Called when the ability to add more calls changes.  If the phone cannot | 
|  | * support more calls then {@code canAddCall} is set to {@code false}.  If it can, then it | 
|  | * is set to {@code true}. This can be used to control the visibility of UI to add more calls. | 
|  | * | 
|  | * @param canAddCall Indicates whether an additional call can be added. | 
|  | */ | 
|  | public void onCanAddCallChanged(boolean canAddCall) { | 
|  | } | 
|  |  | 
|  | /** | 
|  | * Called to silence the ringer if a ringing call exists. | 
|  | */ | 
|  | public void onSilenceRinger() { | 
|  | } | 
|  |  | 
|  | /** | 
|  | * Unused; to handle connection events issued by a {@link ConnectionService}, implement the | 
|  | * {@link android.telecom.Call.Callback#onConnectionEvent(Call, String, Bundle)} callback. | 
|  | * <p> | 
|  | * See {@link Connection#sendConnectionEvent(String, Bundle)}. | 
|  | * | 
|  | * @param call The call the event is associated with. | 
|  | * @param event The event. | 
|  | * @param extras Any associated extras. | 
|  | */ | 
|  | public void onConnectionEvent(Call call, String event, Bundle extras) { | 
|  | } | 
|  |  | 
|  | /** | 
|  | * Used to issue commands to the {@link Connection.VideoProvider} associated with a | 
|  | * {@link Call}. | 
|  | */ | 
|  | public static abstract class VideoCall { | 
|  |  | 
|  | /** @hide */ | 
|  | public abstract void destroy(); | 
|  |  | 
|  | /** | 
|  | * Registers a callback to receive commands and state changes for video calls. | 
|  | * | 
|  | * @param callback The video call callback. | 
|  | */ | 
|  | public abstract void registerCallback(VideoCall.Callback callback); | 
|  |  | 
|  | /** | 
|  | * Registers a callback to receive commands and state changes for video calls. | 
|  | * | 
|  | * @param callback The video call callback. | 
|  | * @param handler A handler which commands and status changes will be delivered to. | 
|  | */ | 
|  | public abstract void registerCallback(VideoCall.Callback callback, Handler handler); | 
|  |  | 
|  | /** | 
|  | * Clears the video call callback set via {@link #registerCallback}. | 
|  | * | 
|  | * @param callback The video call callback to clear. | 
|  | */ | 
|  | public abstract void unregisterCallback(VideoCall.Callback callback); | 
|  |  | 
|  | /** | 
|  | * Sets the camera to be used for the outgoing video. | 
|  | * <p> | 
|  | * Handled by {@link Connection.VideoProvider#onSetCamera(String)}. | 
|  | * | 
|  | * @param cameraId The id of the camera (use ids as reported by | 
|  | * {@link CameraManager#getCameraIdList()}). | 
|  | */ | 
|  | public abstract void setCamera(String cameraId); | 
|  |  | 
|  | /** | 
|  | * Sets the surface to be used for displaying a preview of what the user's camera is | 
|  | * currently capturing.  When video transmission is enabled, this is the video signal which | 
|  | * is sent to the remote device. | 
|  | * <p> | 
|  | * Handled by {@link Connection.VideoProvider#onSetPreviewSurface(Surface)}. | 
|  | * | 
|  | * @param surface The {@link Surface}. | 
|  | */ | 
|  | public abstract void setPreviewSurface(Surface surface); | 
|  |  | 
|  | /** | 
|  | * Sets the surface to be used for displaying the video received from the remote device. | 
|  | * <p> | 
|  | * Handled by {@link Connection.VideoProvider#onSetDisplaySurface(Surface)}. | 
|  | * | 
|  | * @param surface The {@link Surface}. | 
|  | */ | 
|  | public abstract void setDisplaySurface(Surface surface); | 
|  |  | 
|  | /** | 
|  | * Sets the device orientation, in degrees.  Assumes that a standard portrait orientation of | 
|  | * the device is 0 degrees. | 
|  | * <p> | 
|  | * Handled by {@link Connection.VideoProvider#onSetDeviceOrientation(int)}. | 
|  | * | 
|  | * @param rotation The device orientation, in degrees. | 
|  | */ | 
|  | public abstract void setDeviceOrientation(int rotation); | 
|  |  | 
|  | /** | 
|  | * Sets camera zoom ratio. | 
|  | * <p> | 
|  | * Handled by {@link Connection.VideoProvider#onSetZoom(float)}. | 
|  | * | 
|  | * @param value The camera zoom ratio. | 
|  | */ | 
|  | public abstract void setZoom(float value); | 
|  |  | 
|  | /** | 
|  | * Issues a request to modify the properties of the current video session. | 
|  | * <p> | 
|  | * Example scenarios include: requesting an audio-only call to be upgraded to a | 
|  | * bi-directional video call, turning on or off the user's camera, sending a pause signal | 
|  | * when the {@link InCallService} is no longer the foreground application. | 
|  | * <p> | 
|  | * Handled by | 
|  | * {@link Connection.VideoProvider#onSendSessionModifyRequest(VideoProfile, VideoProfile)}. | 
|  | * | 
|  | * @param requestProfile The requested call video properties. | 
|  | */ | 
|  | public abstract void sendSessionModifyRequest(VideoProfile requestProfile); | 
|  |  | 
|  | /** | 
|  | * Provides a response to a request to change the current call video session | 
|  | * properties.  This should be called in response to a request the {@link InCallService} has | 
|  | * received via {@link VideoCall.Callback#onSessionModifyRequestReceived}. | 
|  | * <p> | 
|  | * Handled by | 
|  | * {@link Connection.VideoProvider#onSendSessionModifyResponse(VideoProfile)}. | 
|  | * | 
|  | * @param responseProfile The response call video properties. | 
|  | */ | 
|  | public abstract void sendSessionModifyResponse(VideoProfile responseProfile); | 
|  |  | 
|  | /** | 
|  | * Issues a request to the {@link Connection.VideoProvider} to retrieve the capabilities | 
|  | * of the current camera.  The current camera is selected using | 
|  | * {@link VideoCall#setCamera(String)}. | 
|  | * <p> | 
|  | * Camera capabilities are reported to the caller via | 
|  | * {@link VideoCall.Callback#onCameraCapabilitiesChanged(VideoProfile.CameraCapabilities)}. | 
|  | * <p> | 
|  | * Handled by {@link Connection.VideoProvider#onRequestCameraCapabilities()}. | 
|  | */ | 
|  | public abstract void requestCameraCapabilities(); | 
|  |  | 
|  | /** | 
|  | * Issues a request to the {@link Connection.VideoProvider} to retrieve the cumulative data | 
|  | * usage for the video component of the current call (in bytes).  Data usage is reported | 
|  | * to the caller via {@link VideoCall.Callback#onCallDataUsageChanged}. | 
|  | * <p> | 
|  | * Handled by {@link Connection.VideoProvider#onRequestConnectionDataUsage()}. | 
|  | */ | 
|  | public abstract void requestCallDataUsage(); | 
|  |  | 
|  | /** | 
|  | * Provides the {@link Connection.VideoProvider} with the {@link Uri} of an image to be | 
|  | * displayed to the peer device when the video signal is paused. | 
|  | * <p> | 
|  | * Handled by {@link Connection.VideoProvider#onSetPauseImage(Uri)}. | 
|  | * | 
|  | * @param uri URI of image to display. | 
|  | */ | 
|  | public abstract void setPauseImage(Uri uri); | 
|  |  | 
|  | /** | 
|  | * The {@link InCallService} extends this class to provide a means of receiving callbacks | 
|  | * from the {@link Connection.VideoProvider}. | 
|  | * <p> | 
|  | * When the {@link InCallService} receives the | 
|  | * {@link Call.Callback#onVideoCallChanged(Call, VideoCall)} callback, it should create an | 
|  | * instance its {@link VideoCall.Callback} implementation and set it on the | 
|  | * {@link VideoCall} using {@link VideoCall#registerCallback(Callback)}. | 
|  | */ | 
|  | public static abstract class Callback { | 
|  | /** | 
|  | * Called when the {@link Connection.VideoProvider} receives a session modification | 
|  | * request from the peer device. | 
|  | * <p> | 
|  | * The {@link InCallService} may potentially prompt the user to confirm whether they | 
|  | * wish to accept the request, or decide to automatically accept the request.  In either | 
|  | * case the {@link InCallService} should call | 
|  | * {@link VideoCall#sendSessionModifyResponse(VideoProfile)} to indicate the video | 
|  | * profile agreed upon. | 
|  | * <p> | 
|  | * Callback originates from | 
|  | * {@link Connection.VideoProvider#receiveSessionModifyRequest(VideoProfile)}. | 
|  | * | 
|  | * @param videoProfile The requested video profile. | 
|  | */ | 
|  | public abstract void onSessionModifyRequestReceived(VideoProfile videoProfile); | 
|  |  | 
|  | /** | 
|  | * Called when the {@link Connection.VideoProvider} receives a response to a session | 
|  | * modification request previously sent to the peer device. | 
|  | * <p> | 
|  | * The new video state should not be considered active by the {@link InCallService} | 
|  | * until the {@link Call} video state changes (the | 
|  | * {@link Call.Callback#onDetailsChanged(Call, Call.Details)} callback is triggered | 
|  | * when the video state changes). | 
|  | * <p> | 
|  | * Callback originates from | 
|  | * {@link Connection.VideoProvider#receiveSessionModifyResponse(int, VideoProfile, | 
|  | *      VideoProfile)}. | 
|  | * | 
|  | * @param status Status of the session modify request.  Valid values are | 
|  | *      {@link Connection.VideoProvider#SESSION_MODIFY_REQUEST_SUCCESS}, | 
|  | *      {@link Connection.VideoProvider#SESSION_MODIFY_REQUEST_FAIL}, | 
|  | *      {@link Connection.VideoProvider#SESSION_MODIFY_REQUEST_INVALID}, | 
|  | *      {@link Connection.VideoProvider#SESSION_MODIFY_REQUEST_TIMED_OUT}, | 
|  | *      {@link Connection.VideoProvider#SESSION_MODIFY_REQUEST_REJECTED_BY_REMOTE}. | 
|  | * @param requestedProfile The original request which was sent to the peer device. | 
|  | * @param responseProfile The actual profile changes made by the peer device. | 
|  | */ | 
|  | public abstract void onSessionModifyResponseReceived(int status, | 
|  | VideoProfile requestedProfile, VideoProfile responseProfile); | 
|  |  | 
|  | /** | 
|  | * Handles events related to the current video session which the {@link InCallService} | 
|  | * may wish to handle. These are separate from requested changes to the session due to | 
|  | * the underlying protocol or connection. | 
|  | * <p> | 
|  | * Callback originates from | 
|  | * {@link Connection.VideoProvider#handleCallSessionEvent(int)}. | 
|  | * | 
|  | * @param event The event.  Valid values are: | 
|  | *      {@link Connection.VideoProvider#SESSION_EVENT_RX_PAUSE}, | 
|  | *      {@link Connection.VideoProvider#SESSION_EVENT_RX_RESUME}, | 
|  | *      {@link Connection.VideoProvider#SESSION_EVENT_TX_START}, | 
|  | *      {@link Connection.VideoProvider#SESSION_EVENT_TX_STOP}, | 
|  | *      {@link Connection.VideoProvider#SESSION_EVENT_CAMERA_FAILURE}, | 
|  | *      {@link Connection.VideoProvider#SESSION_EVENT_CAMERA_READY}. | 
|  | */ | 
|  | public abstract void onCallSessionEvent(int event); | 
|  |  | 
|  | /** | 
|  | * Handles a change to the video dimensions from the peer device. This could happen if, | 
|  | * for example, the peer changes orientation of their device, or switches cameras. | 
|  | * <p> | 
|  | * Callback originates from | 
|  | * {@link Connection.VideoProvider#changePeerDimensions(int, int)}. | 
|  | * | 
|  | * @param width  The updated peer video width. | 
|  | * @param height The updated peer video height. | 
|  | */ | 
|  | public abstract void onPeerDimensionsChanged(int width, int height); | 
|  |  | 
|  | /** | 
|  | * Handles a change to the video quality. | 
|  | * <p> | 
|  | * Callback originates from {@link Connection.VideoProvider#changeVideoQuality(int)}. | 
|  | * | 
|  | * @param videoQuality  The updated peer video quality.  Valid values: | 
|  | *      {@link VideoProfile#QUALITY_HIGH}, | 
|  | *      {@link VideoProfile#QUALITY_MEDIUM}, | 
|  | *      {@link VideoProfile#QUALITY_LOW}, | 
|  | *      {@link VideoProfile#QUALITY_DEFAULT}. | 
|  | */ | 
|  | public abstract void onVideoQualityChanged(int videoQuality); | 
|  |  | 
|  | /** | 
|  | * Handles an update to the total data used for the current video session. | 
|  | * <p> | 
|  | * Used by the {@link Connection.VideoProvider} in response to | 
|  | * {@link VideoCall#requestCallDataUsage()}.  May also be called periodically by the | 
|  | * {@link Connection.VideoProvider}. | 
|  | * <p> | 
|  | * Callback originates from {@link Connection.VideoProvider#setCallDataUsage(long)}. | 
|  | * | 
|  | * @param dataUsage The updated data usage (in bytes). | 
|  | */ | 
|  | public abstract void onCallDataUsageChanged(long dataUsage); | 
|  |  | 
|  | /** | 
|  | * Handles a change in the capabilities of the currently selected camera. | 
|  | * <p> | 
|  | * Used by the {@link Connection.VideoProvider} in response to | 
|  | * {@link VideoCall#requestCameraCapabilities()}.  The {@link Connection.VideoProvider} | 
|  | * may also report the camera capabilities after a call to | 
|  | * {@link VideoCall#setCamera(String)}. | 
|  | * <p> | 
|  | * Callback originates from | 
|  | * {@link Connection.VideoProvider#changeCameraCapabilities( | 
|  | *      VideoProfile.CameraCapabilities)}. | 
|  | * | 
|  | * @param cameraCapabilities The changed camera capabilities. | 
|  | */ | 
|  | public abstract void onCameraCapabilitiesChanged( | 
|  | VideoProfile.CameraCapabilities cameraCapabilities); | 
|  | } | 
|  | } | 
|  | } |